Alachisoft NCache 4.1 - Online Documentation

Diskperf Not Installed

The Windows parameter sets cannot collect information about the monitored computer unless the Disk Performance Statistics Driver (Diskperf) has already been run on the monitored computer.
By default, Diskperf installs the Disk Performance Statistics Driver above the fault tolerant driver, Ftdisk.sys, in the I/O Manager disk driver stack. To determine if Ftdisk is started in your configuration, use the Devices Control Panel.
Use the following steps to run Diskperf on the monitored Windows computer. You must be a member of the Administrator's local group on a computer to run Diskperf on that computer.
  • Open a Command Prompt window.
  • At the command prompt, type one of the following commands, and press 'Enter'.
  • diskperf -y: enables the counters on a standard disk configuration
  • diskperf: indicates whether disk counters are enabled or disabled
  • diskperf -yv: enables disk counters on mirror and stripe sets and other noncontiguous partition sets and installs the performance statistics driver below the fault tolerant driver in the I/O stack
  • diskperf -n: disables disk counters
  • To run diskperf on a remote computer, type the command name, followed by the computer name. For example: diskperf //computername
  • To monitor the physical disks in disk configurations that include Ftdisk, run the diskperf -yv command.
  • Restart the computer.
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